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java Programming Glossary: primaryRunning a .sql script using MySQL with JDBC http://stackoverflow.com/questions/1044194/running-a-sql-script-using-mysql-with-jdbc id int AUTO_INCREMENT not null nombre char 20 not null primary key id I have 3 4 tables to create and this doesn't look good...
http://stackoverflow.com/questions/1074081/hibernate-error-org-hibernate-nonuniqueobjectexception-a-different-object-with you have two objects which have the same identifier same primary key but they are not the same object. I would suggest you break.. with the session but not on the same instance of B. What primary key generator are you using The reason I ask is this error is.. object and maybe there is already an object with that same primary key associated with the session. share improve this answer..
Is it good practice to use java.lang.String.intern()? http://stackoverflow.com/questions/1091045/is-it-good-practice-to-use-java-lang-string-intern Are there side effects not mentioned in the Javadoc The primary disadvantage is that you have to remember to make sure that..
how to make a composite primary key (java persistence annotation) http://stackoverflow.com/questions/1212058/how-to-make-a-composite-primary-key-java-persistence-annotation to make a composite primary key java persistence annotation how to make it so that the.. defines the two columns userID roleID as a composite primary key. should be easy just can't remember find. in userdao @ManyToMany.. columns in the generated table user_roles to be a composit primary key. java persistence annotations primary key many to many..
equals and hashcode in Hibernate http://stackoverflow.com/questions/1638723/equals-and-hashcode-in-hibernate If the above is impossible base equals hashCode on primary key IF it's set and object identity System.identityHashCode..
Import package.* vs import package.SpecificType [duplicate] http://stackoverflow.com/questions/187453/import-package-vs-import-package-specifictype consider it to be a best practice to never use import . My primary reason for this is I just like to keep things straightward clean..
Choosing a Java Web Framework now? [closed] http://stackoverflow.com/questions/2084169/choosing-a-java-web-framework-now We want to continue using java. Template based layout is a primary concern as we intend to use this web application with multiple..
Hibernate JPA Sequence (non-Id) http://stackoverflow.com/questions/277630/hibernate-jpa-sequence-non-id where the column for the sequence is NOT part of the primary key @Entity @Table name MyTable public class MyEntity ... @Id.. for my property. If Hibernate can generate values for primary keys why can't it generate for a simple property java hibernate..
The JPA hashCode() / equals() dilemma http://stackoverflow.com/questions/5031614/the-jpa-hashcode-equals-dilemma problems with detached entities Override them based on the primary key hashCode equals are broken correct identity for all managed.. entities Override them based on the Business Id non primary key fields what about foreign keys hashCode equals are broken..
Sessions in struts2 application http://stackoverflow.com/questions/5509606/sessions-in-struts2-application I am using an integer which would probably represent a primary key that I would look the user up by with Hibernate or some..
Is there a way to take a screenshot using Java and save it to some sort of image? http://stackoverflow.com/questions/58305/is-there-a-way-to-take-a-screenshot-using-java-and-save-it-to-some-sort-of-image bmp new File args 0 NOTE This will only capture the primary monitor. See GraphicsConfiguration for multi monitor support...
JPA Hibernate One-to-One relationship http://stackoverflow.com/questions/787698/jpa-hibernate-one-to-one-relationship trying to do is one to one entity association with shared primary key . The simplest case is unidirectional one to one with shared.. with this is that JPA provides no support for shared primary key generation in OtherInfo entity. The classic book Java Persistence..
How to get Ip address of our own system using java http://stackoverflow.com/questions/9481865/how-to-get-ip-address-of-our-own-system-using-java for the host and use InetAddress.getByName to look up the primary IP address. But how do you get it and how do you deal with a..
How to get UTF-8 working in java webapps? http://stackoverflow.com/questions/138948/how-to-get-utf-8-working-in-java-webapps `name` varchar 30 collate utf8_swedish_ci default NULL PRIMARY KEY `id` ENGINE InnoDB DEFAULT CHARSET utf8 COLLATE utf8_swedish_ci..
document not saving in spring jpa document manager application http://stackoverflow.com/questions/20586865/document-not-saving-in-spring-jpa-document-manager-application documenttypes id INT 4 UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY name VARCHAR 80 INDEX name CREATE TABLE IF NOT EXISTS patients.. EXISTS patients id INT 4 UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY first_name VARCHAR 30 middle_initial VARCHAR 5 last_name.. documents id int 11 UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY client_id int 4 UNSIGNED NOT NULL type_id INT 4 UNSIGNED..
Paste a multi-line Java String in Eclipse http://stackoverflow.com/questions/2159678/paste-a-multi-line-java-string-in-eclipse like String x CREATE TABLE TEST n A INTEGER NOT NULL PRIMARY KEY n ... What is the fastest way to paste a multi line String..
Foreign key constraints in Android using SQLite? on Delete cascade http://stackoverflow.com/questions/2545558/foreign-key-constraints-in-android-using-sqlite-on-delete-cascade db db.execSQL CREATE TABLE TABLE_NAME _ID INTEGER PRIMARY KEY AUTOINCREMENT LONGITUDE INTEGER LATITUDE INTEGER TIME INTEGER..
http://stackoverflow.com/questions/3631349/how-do-i-cure-the-cause-of-hibernate-exception-illegalargumentexception-occurre 20 CHAR NOT NULL ENABLE USER_RV NUMBER NOT NULL ENABLE PRIMARY KEY USER_ID Environment Hibernate 3.3.2.GA Ehcache 2.2.0 WebLogic..
http://stackoverflow.com/questions/3669883/hibernate-where-do-insertable-false-updatable-false-belong-in-composite-pr CREATE TABLE Zips country_code CHAR 2 code VARCHAR 10 PRIMARY KEY country_code code FOREIGN KEY country_code REFERENCES Countries..
How to annotate MYSQL autoincrement field with JPA annotations http://stackoverflow.com/questions/4102449/how-to-annotate-mysql-autoincrement-field-with-jpa-annotations `password` VARCHAR 50 NOT NULL `active` INT 1 NOT NULL PRIMARY KEY `id` ENGINE InnoDB ROW_FORMAT DEFAULT Also I have specified.. `password` VARCHAR 50 NOT NULL `active` INT 1 NOT NULL PRIMARY KEY `id` CREATE TABLE `authority_role` `id` INT 10 NOT NULL.. VARCHAR 100 NOT NULL `description` VARCHAR 200 NOT NULL PRIMARY KEY `ID` CREATE TABLE `operator_authority_role` `operator_id`..
PreparedStatement with Statement.RETURN_GENERATED_KEYS http://stackoverflow.com/questions/4224228/preparedstatement-with-statement-return-generated-keys EMAIL_ADDRESS DOB VALUES In the USER table there's a PRIMARY KEY USER_ID which is a BIGINT AUTOINCREMENT hence why you don't..
Android - Sqlite database method undefined fot type http://stackoverflow.com/questions/4591765/android-sqlite-database-method-undefined-fot-type db String query CREATE TABLE myTable _id INTEGER PRIMARY KEY AUTOINCREMENT name TEXT NOT NULL age INTEGER NOT NULL db.execSQL..
http://stackoverflow.com/questions/6450780/jpa-composite-primary-key when I try to load the DDL into SQL Server Cannot define PRIMARY KEY constraint on nullable column in table 'PRICE' I don't understand..
Getting last record from mysql http://stackoverflow.com/questions/8923366/getting-last-record-from-mysql InnoDB InnoDB always orders table rows according to a PRIMARY KEY or NOT NULL UNIQUE index if one is present. As far as I..
How do you enforce foreign key constraints in SQLite through Java? http://stackoverflow.com/questions/9774923/how-do-you-enforce-foreign-key-constraints-in-sqlite-through-java Quoted from here CREATE TABLE artist artistid INTEGER PRIMARY KEY artistname TEXT CREATE TABLE track trackid INTEGER trackname..
Is MERGE an atomic statement in SQL2008? http://stackoverflow.com/questions/9871644/is-merge-an-atomic-statement-in-sql2008 The error reads java.sql.BatchUpdateException Violation of PRIMARY KEY constraint 'PK_CustomerSpend'. Cannot insert duplicate key.. Db.java 299 ... The key on the table is a PRIMARY key on the ID field. java sql sql server 2008 upsert share..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array start clock long long sum 0 for unsigned i 0 i 100000 i Primary loop for unsigned c 0 c arraySize c if data c 128 sum data.. start System.nanoTime long sum 0 for int i 0 i 100000 i Primary loop for int c 0 c arraySize c if data c 128 sum data c ..
Static fields on a null reference in Java http://stackoverflow.com/questions/11579953/static-fields-on-a-null-reference-in-java In more details a static field evaluation such as Primary.staticField works as follows emphasis mine in your case Primary.. works as follows emphasis mine in your case Primary main.getNull The Primary expression is evaluated and the result.. emphasis mine in your case Primary main.getNull The Primary expression is evaluated and the result is discarded . ... If..
Can Java Sound be used to control the system volume? http://stackoverflow.com/questions/14301618/can-java-sound-be-used-to-control-the-system-volume volume. run There are 4 mixer info objects mixer name Primary Sound Driver Line.Info interface SourceDataLine supporting 8..
Shards and replicas in Elasticsearch http://stackoverflow.com/questions/15694724/shards-and-replicas-in-elasticsearch is supposed to hold that document and will index it there. Primary shards are not copy of the data they are the data Having multiple..
What is resource-ref in web.xml used for? http://stackoverflow.com/questions/2887967/what-is-resource-ref-in-web-xml-used-for when it might be useful. Example resource ref description Primary database description res ref name jdbc primaryDB res ref name.. res ref name jdbc primaryDB res ref name jndi name jdbc PrimaryDBInTheContainer jndi name resource ref Finally it returns the.. it returns the object registered under the name of jdbc PrimaryDBInTheContainer . The idea is that specifying resources in the..
JPA: difference between @JoinColumn and @PrimaryKeyJoinColumn? http://stackoverflow.com/questions/3417097/jpa-difference-between-joincolumn-and-primarykeyjoincolumn difference between @JoinColumn and @PrimaryKeyJoinColumn What's the exact difference between @JoinColumn.. What's the exact difference between @JoinColumn and @PrimaryKeyJoinColumn You use @JoinColumn for columns that are part of.. Now the question is Are @Id @JoinColumn the same as just @PrimaryKeyJoinColumn @ManyToOne @PrimaryKeyJoinColumn name ... private..
How to map a composite key with Hibernate? http://stackoverflow.com/questions/3585034/how-to-map-a-composite-key-with-hibernate by the specification also applies. So here they are 2.1.4 Primary Keys and Entity Identity ... A composite primary key must correspond.. from Time t References JPA 1.0 specification Section 2.1.4 Primary Keys and Entity Identity Section 9.1.14 EmbeddedId Annotation..
Hibernate - @ElementCollection - Strange delete/insert behavior http://stackoverflow.com/questions/3742897/hibernate-elementcollection-strange-delete-insert-behavior in the page about ElementCollection of the JPA wikibook Primary keys in CollectionTable The JPA 2.0 specification does not provide..
http://stackoverflow.com/questions/4027623/how-do-i-properly-cascade-save-a-one-to-one-bidirectional-relationship-on-prima return leadId @OneToOne cascade CascadeType.ALL @PrimaryKeyJoinColumn public LeadAffiliate getLeadAffiliate return leadAffiliate.. leadAffiliate @OneToOne cascade CascadeType.All @PrimaryKeyJoinColumn @JoinColumn name lead_id public Lead getLead return.. getLeadId return leadId @OneToOne mappedBy leadAffiliate @PrimaryKeyJoinColumn public Lead getLead return lead However with..
Mapping ManyToMany with composite Primary key and Annotation: http://stackoverflow.com/questions/6405746/mapping-manytomany-with-composite-primary-key-and-annotation ManyToMany with composite Primary key and Annotation I'm trying to create manytomany realation.. between Student and Teaching Course using Composite Primary key my classes @Entity @Table name Student_mtm_cId public class..
http://stackoverflow.com/questions/6450780/jpa-composite-primary-key Recently I created ManyToMany relation using Composite Primary key and annotation as bi directional @OneToMany . This code..
List of useful environment settings in Java http://stackoverflow.com/questions/7585699/list-of-useful-environment-settings-in-java height '600' param name 'show' value 'Sound Sampled Mixers Primary Sound Capture Driver' applet import javax.imageio.ImageIO import..
Swing GroupLayout: Resizing and limiting component sizes http://stackoverflow.com/questions/8492065/swing-grouplayout-resizing-and-limiting-component-sizes GroupPanel extends JPanel private JLabel label1 new JLabel Primary private JTextField field1 new JTextField 16 private JLabel label2..
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